Thanks for your feedback on this topic. In the latest version of the app (Version 3.1.252) we have added a fix to put offline language packs on the SD card. Please update your app to the latest version and let us know if this works.
Microsoft Translator TeamUwe Hartmann commented
I've free space in abundance on a SD card. It should be possible to choose the location for offline translations.Uwe Hartmann supported this idea ·